Lamp-ignition device.



L. M. DULL.

LAMP IGNITION DEVIGE.

' APPLICATION FILED 00T.24,1912.

Patented Mar. 10, 1914.

'UNITED STATES PATENT OFFICE.

LESTER M. DULL, 0F LOS ANGELES, CALIFORNIA.

LAMPJGNITION DEVICE'.

To all whom t may concern Be it known that I, LESTER M. DULL, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented. a new and useful Lamp-Ignition Device, of which the following' is a specification.

My invention relates to a lamp ignition device, and is particularly designed for the purpose of igniting the common form of gas lamps used on automobiles, and the main object of my invention is to produce a device of the character described of simple form and construction and simple and eiiicientin operation.

.Referring to the drawings, which are for illustrative purposes only: Figure 1 is a vertical sectional view of a gas valve and electric switch. Fig. 2 is a sectional plan view on line .r2-.r2 Fig. 1. Fig. 3 is a diagrammatic view illustrating the manner of using my invent-ion in connection with the gas lamps of an automobile.

1 designates a base provided with a circular shoulder 2 which extends into the lower end of a tubular member or casing 3 formed of brass or any other suitable material, the upper end of which is closed by means of a screw cap 4.

6 designates a cylinder composed of ber or other insulating material, the lower end of which cylinder iits over the shouldered portion 7 of the base 1, and the upper end of which lits against the inner side of the cap 4;. Extending upwardly from the base 1 within the cylinder G is a nipple 9 provided with a stufing box 1() through which extends a threaded valve stem 11, the beveled end 12 of which is adapted to seat on a valve seat 13 to close a gas passage 1.4L formed in the base 1, the inlet end 15 of which extends through the nipple 16 and the outlet end 17 of which extends through a nipple 18 formed respectively on the base 1. The inlet end 15 of the passage 11i is connected by means of a pipe 20 with a gas reservoir 21, and the outlet end 17 of the passage 14 is connected by means of a pipe 22 with branch pipes 23 and 24 which communicate respectively with burner tips 25 and 26 in the lamps of the automobile. Between the inlet end 15 of the passage 14 and the valve formed by the valve stem 11 and seat 13 is a cut-ofti valve 28, the valve stem 29 of which is pro vided with a handle 30 by which said valve 28 may be operated to close the passage 14 Specification of Letters Patent.

Application filed October 24, 1912.

Patented Mar. 10, 1914. Serial No. 727,606.

as the gas enters the same and tank 21.

32 designates a plungei consisting of a hollow core 33 formed of fiber, or other insulating material, the lower end of which is secured by means of a screw 34 to a head formed on the lower end of a rod 3G, the upper end of which rod extends through the cap et on the casing 3 and is provided exte* riorly thereof with an operating handle 37. rThe head 35 is provided with a square hole 38 in the lower end of the same, which hole 3S is adapted to receive the squared end 39 of the valve stem 11, so that the turning movement of the rod 86 by means of the handle 37 imparts a turning movement t0 the valve stem 11 for the purpose of opening or closing the gas passage 14.

ll() designates a coil spring on the rod 36, the upper end of which spring 10 abuts against the cap Ll, and t-he lower end of which abuts against the head 35, so that the action of the spring causes the head 35 on the rod 36 to remain in engagement with the squared end 39 of the valve stem 11, except at such times, hereinafter described, as the rod 36 is drawn upwardly and the spring 110 compressed.

l15 designates a metallic ring secured to the core by means of a screw 16, which ring 45 forms a sliding contact with the interior of the cylinder 6. Ll designates a conta-ct extending lthrough the cylinder G where the same is exposed to sliding contact with the ring 4:5 when the ring is in raised or dotted line position as indicated in Figs. 1 and 2.

50 and 51 designate metallic contacts which extend through the walls of the cylin der 6 on the opposite sides thereof, the inner ends of which contacts are exposed to contact with the ring Ll5. The contact 4S is connect ed by means of a wire 52 and wires 58 and to terminal points 55 and 56 respectively adjacent to the burner tips 25 and 26. The terminals 57 and 58 opposite to the terminals 55 and 56 are grounded as at 60. The contact 50 is connected by means of wire 61 with one side of a magneto 62, the other side of the magneto being grounded, as indicated at 63. Contact 51 is connected by wires 65 and 66 to the respective spark plugs 70 of a movable cylinder explosive engine, indicated at 71 in dotted lines in Fig. 3, the spark plugs 70 being ,grounded as indicated aty 72.

The device operates in the following manner: While the engine is running, the engine from the pipe 20 circuit consist of a magneto G2, Wire 61, contact 50, ring 45, contact 51, Wires G5 and G6 to the spark plugs, thence to the ground. Vhen it is desired to light the lamps, the handle 37 is rotated to operate the valve stem 11 to o-pen the passage 14, thereby permitting gas to flow from the tank 21 through pipe 20, thence through passage 14 to pipe 22, thence through branch pipes 23 and :24 to the respective burners or tips and 26. After opening the valve, the handle 37 is raised carrying therewith the core 33 and contact ring thereon, which movement breaks the engine circuit heretofore described as the contact ring 45 moves upwardly out of engagement With the contact 51 and closes the lamp ignition circuit, which consists of magneto 62, Wire 61, contact 50,

ring 45, contact 48, Wire 52, Wires 53 and to terminals 55 and 56 respectively, Which terminals 55 and 56 coacting With grounded terminals 57 and 58 cause a spark to jump across the outlet ot the respective burners, thereby lighting the gas escaping from the same.

It will be understood from the above description that a single source of electric energy, namely, the magneto- 62, is used for generating the electric energy for the spark plugs of the engine, the same source ot' energy being used for ing which operation the engine circuit is broken and electric energy diverted to the lamp ignition circuit. It is also understood that the lamp ignition circuit is closed but a short interval of time sufficient to light the lamps, after Which the spring 40 on the rod 36 pushes the plunger downwardly so that the head 35 on the rod 36 is in engagement with the squared end 39 of the valve stem 11, at the same time the engine circuit being closed, after which the valve may be operated to regulate the passage of gas through the passage 14. The cut-ottl valve lighting the lamps, dura valve 28 is independent of the main valve and may be used as an auxiliary to reduce the pressure in the passage'14 between the gas tank :21 and the main valve, or the valve 28 may be used for cutting oi the flow of gas entirely.

What I claim is 1. A lamp ignition device comprising a support having a gas opening therethrough, for regulating the flow of gas in said gas opening, a rod slidable in said support and engaging said valve, a spring for holding said rod in engagement With said valve, stationary contacts secured to said support and a movable contact carried by said rod.

A lamp ignition device comprising a support, a gas valve secured to said support, a stem for said gas valve, a rod slidable with relation to said support and engaging said stem, a spring for holding said rod in engagement with said stem, stationary contacts secured to said support, and a movable Contact carried by said rod.

3, A lamp ignition device comprising a su o )ort a as o enino through said su ort.

l a c o a valve regulating said opening, a square stem for said valve, a cylindrical cover for said support, an insulating cylinder secured to said support, stationary contacts on said insulating cylinder, a rod having a square recess for engaging said stem, a spring holding said rod in engagement with said stem,

an insulating tube carried by said rod, and

a movable contact carried by said insulating tube.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 18th day of October, 1912.

FRANK L. A. GRAHAM, LORRAINE E. DURROW.

Gopicl of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. i 

